<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<button type="button" value="提交" style="display:block;margin:0 auto" class="layui-btn layui-btn-normal" id="commit01">

<th><input type="checkbox"></th>
</body>
</html>